Win7 Routing Traffic Between NICs

poppin · 03-21-2012, 01:26 PM

So heres the deal.
I want to route traffic from nic 2(192.168.2.1) to nic 1(192.168.1.1).
In lame terms route the traffic from 192.168.2.10(gateway 192.168.2.1) to 192.168.135(192.168.1.1).
I know how to use the route command in CMD.
So how would I get the traffic from 192.168.2.10 to 192.168.1.135?
I'm just not sure how I would do that with the route command.
I've tried
Code:
route -p add 192.168.1.135 mask 255.255.255.0 192.168.1.1 IF 12
Also tried like 5 different ways!! lol

The IF 12 is my NIC 2. Can someone help me?(also I couldn't find a networking section)

poppin · 03-21-2012, 01:53 PM

It seems nobody has a knowledge of this...

Shekka · 03-21-2012, 10:35 PM

It takes time for us to respond. We are all volunteers, and do this in our spare time.

I believe it should look like this:

route -p add 192.168.2.10 mask 255.255.255.0 192.168.1.135

This will send the traffic from 192.168.2.10 to 192.168.1.135

You don't have to specify a metric, windows will enter a default.
You could also enter it like this:

route -p add 192.168.2.0 mask 255.255.255.0 192.168.1.0

This will take a little longer but will span the whole spectrum.
MS article below.
Microsoft Corporation

smartguykkd · 03-21-2012, 10:41 PM

gust give the command like

route add 192.168.1.0 mask 255.255.255.0 192.168.2.1

poppin · 03-22-2012, 11:05 AM

Thanks for your replies :DD Sorry for jumping the gun. I now understand the route command but I routed traffic from 192.168.2.1 > 192.168.1.135 and 192.168.1.135 > 192.168.2.1 and I didn't get a response on the second NIC.
Then i tried 192.168.2.0 > 192.168.1.0 and 192.168.1.0 > 192.168.2.0 and everything still only responds on 192.168.1.135(NIC A)
If you have the time. Could you explain how I would use route to make a web server respond on 2 external ips? All ports are forwarded its a matter of routing the traffic from NIC B(192.168.2.10|192.168.2.1) to the server on ip 192.168.1.135(server binds to this ip.) Is this called a multi-homed server? I really need to get this to work. Thanks in advance.

Shekka · 03-22-2012, 04:19 PM

Ok maybe we should start over.

What is it exactly that you are trying to accomplish? What type of server / software are you using?

poppin · 03-23-2012, 11:04 AM

I have a web server that can only bind to a single local ip for instance;
192.168.1.135(NIC A) and doesn't respond on the 192.168.2.10(NIC B).
What I want to do is have it respond on both adapters(two different Internets)
What I believed was possible is to route;
the traffic from 192.168.2.10 to 192.168.1.135 and also on the other end.

I can't seem to properly route the traffic to make them respond on both networks. If you could somehow explain to me what i'm doing wrong or give me an example of one end route command once i understand the example i can do the other end myself i believe.

Shekka · 03-23-2012, 11:16 AM

Quote:

Originally Posted by poppin

I have a web server that can only bind to a single local ip for instance;
192.168.1.135(NIC A) and doesn't respond on the 192.168.2.10(NIC B).
What I want to do is have it respond on both adapters(two different Internets)

So these systems are in two different locations with two different Internet connections?

Or do you have two nics in one computer and both go to different modems/routers for Internet?

poppin · 03-23-2012, 11:38 AM

Its a dual NIC. So there is only one server tower and 2 internet connections in which would like the server to respond to. So yes two modems and 1 computer.

Shekka · 03-23-2012, 12:01 PM

Quote:

Originally Posted by poppin

Its a dual NIC. So there is only one server tower and 2 internet connections in which would like the server to respond to. So yes two modems and 1 computer.

Why two Internet connections? Are you trying to speed you Internet up by using two different connections?

I think what you actually need is a dual WAN router.

poppin · 03-23-2012, 12:24 PM

No I'm not trying to speed up anything I am trying to create DDoS protection for my server so we have a fallback ip just in-case a network starts to get flooded.
I only what the server accessible on both external ips. And Yes, I have already port-forwarded correctly.
Its a matter of getting the server to respond because it can only bind to one ip address I need to somehow route the traffic to 192.168.1.135(NIC A) so that the server is available on both IPs. Are you able to help me?

poppin · 03-23-2012, 12:38 PM

So getting a dual wan router would completely destroy the point of having two separate internet connections for DDoS protection. Is what i'm trying to do possible because i have gotten the server to respond on both NICs but it will never use the right NIC for the main IP. So i figured with the route command i might be able to get around that.

poppin · 03-23-2012, 12:53 PM

So Shekka do you happen to have any knowledge about this scenario?

tech_soul8 · 03-23-2012, 01:03 PM

I'm not shure if i get it wright becouse it is a little bit messy explanation or it is becouse i just woked up wright now :D
First of all is this second nic 192.168.1.135 connected directly to modem?

Shekka · 03-23-2012, 01:23 PM

Poppin, I am gonna ask for some assistance on this.

If I am understanding this correctly, you want to route NIC 1 to NIC 2 then route NIC 2 back to NIC 1. In my mind this is just going to create a infinite loop.

But I will ask and we will see.

It might take a while before they can come and read it, so please be patient.

poppin · 03-23-2012, 01:29 PM

Alright :D And for the infinite loop, all i want is the server to respond on both adapters but it binds to a single IP is there a way to route both NIC A and NIC B to a new created ip? It seems what i was saying wasn't quite logical but this way makes more sense.

poppin · 03-23-2012, 01:34 PM

Quote:

Originally Posted by tech_soul8

I'm not shure if i get it wright becouse it is a little bit messy explanation or it is becouse i just woked up wright now :D
First of all is this second nic 192.168.1.135 connected directly to modem?

:) It was quite a messy explanation sorry. I just need the server to bind to a local IP that is connected to NIC A and NIC B, for response on both adapters some how.....
Edit: Both adapters are connect directly to a router that has internet access.

tech_soul8 · 03-23-2012, 03:45 PM

Well if I'm getting you wright I'm affraid that's impossible.
Let's go from the beggining. You have modem which have external public ip address. On your win 7 machine you setup web server and you got 2 nic's. You make port forward from modem to your win 7's nic adapter 1 192.168.1.1. If you don't have public ip address from your ISP (and you probably don't becouse you're forwarded traffic to your nic 1) I suppose that you're connected to the internet by nat. Modem actually does nat mapping for you. What is nat? Nat is tehnology that allows yor computers from private ip addresses to communicate on internet by converting them to public ip address and than maps that conversion into nat table. What happens when some computer from the internet want's to communicate with your web server. It sends request to your modem and than modem forwards traffic to your nic 1 (becouse you opened that port). So traffic comes directly to nic 1 and there's no need to forward it somewhere else (and I think it's impossible too). I suppose you installed IIS on win 7. And at the end routing isn't involved here at all on your win 7 machine becouse both nic are on the same computer. I'm using Linux and there's possibility to configure iptables to forward traffic from one nic to other but I don't think that win 7 is capable of doing so. At the end win 7 insn't the smartest solution for setting up web server. You should get your self linux or some server product from microsoft if you ask me :)

Hope I helped :)

poppin · 03-23-2012, 06:56 PM

I have two ISPs and I want to have my server respond on BOTH external ips. I have NIC 1 connected to internet 1 and NIC 2 connected to internet 2 i want to somehow route incoming traffic to a single ip(possibly virtual adapter or maybe theres a way to do it with a gateway and some route commands but i've tried using the gateway but it wont respond on both ips when i try to use the metric 1 gateway for NIC 1 but when i set it to 2 when the server is already binded it responds on both but uses the secondary gateway instead of the main gateway)

**TheCyberMan** · 03-24-2012, 05:01 AM

I think you are wanting failover so when one nic goes down it automatically switches to the other nic the server editions offer this windows 7 does not have this built in and won't handle this as shekka says it is going to an infinite loop.